j4. NO AIR PRESSURE PRESENT AT REAR GLADHAND(S) (CONT)
TEST OPTIONS
Visual inspection
REASON FOR QUESTION
Is air present at
air brake protecting valve
supply port FV1?
This question eliminates
possible problems and
determines where
troubleshooting continues.
KNOWN INFO
YES
NO
Go to step 14
of this fault.
12.
Vehicle park and service brakes
OK.
Air hoses free from kinks.
Emergency gladhand OK.
Air hose 126 OK.
Service gladhand OK.
Air hose 124 OK.
Air hose 102 OK.
Air hose 108 OK.
TRAILER AIR SUPPLY valve
OK.
Air hose 104 OK.
Air hose 265 OK.
POSSIBLE PROBLEMS
Faulty air brake protecting
valve.
Faulty air hose 247.
Faulty load sensing valve
control port tee fitting.
Faulty service gladhand
two-way check valve.
Faulty air hose 244.
Faulty air hose 120.
Faulty inversion valve control
port 90-degree fitting.
Faulty air hose 117.
TM 9-2320-365-20-2
2-1742.18 Change 1